98 JETTA GL. REVERCE POPS OUT OF GEER ON INCLINE CLUTCH WAS REPLACED BY MECH A YEAR AGO AND IT STILL POPS OUT?? 98 JETTA GL. REVERCE POPS OUT OF GEER ON INCLINE CLUTCH WAS REPLACED BY MECH A YEAR AGO AND IT STILL POPS OUT??

I have same problem. It seems to go in reverse ok and when it starts to move it pops out and then it grinds. I try to apply pressure but it still feels like it is trying to pop out of gear. My oldest son may have ruined it by using force. I have had 2 mechs tell me it could be messed up linkage and two tell me it is the tranny. can anyone give me some advise prior to replacing tranny.

I have same problem. It seems to go in reverse ok and when it starts to move it pops out and then it grinds. I try to apply pressure but it still feels like it is trying to pop out of gear. My oldest son may have ruined it by using force. I have had 2 mechs tell me it could be messed up linkage and two tell me it is the tranny. can anyone give me some advise prior to replacing tranny.

1 Answer

98 Jetta GLS
reverse gear can lose teeth and "pop" out of gear especially when backup up an incline. Dealer fixed it once under warranty but claimed driver misuse. Problem occurred again and we don't want a costly rebuilt transmission.

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In the BJB - battery junction box under the hood ,is a reversing lamp relay. Check it or try a known good one !an check fuse F70 10amp in the BJB .

Reversing Lamps

The reversing lamp system consists of the following components:

Rear lamps

Reversing lamp switch

PCM

BCM

When the transmission is placed in REVERSE (R), the BCM provides voltage to the reversing lamps. The reversing lamps are located within the rear lamp assemblies.
When the transmission is in REVERSE, the PCM (gasoline engine) or the Transmission Control Module (TCM) (diesel engine) sends a message over the High Speed Controller Area Network (HS-CAN) to the Body Control Module (BCM) indicating the transmission is in REVERSE. The BCM provides voltage to the reversing lamps when it receives the message that the transmission is in REVERSE and the ignition is in the RUN state. You could have a transmission range sensor problem , check to see if it is adjusted correctly ! Need to have a scan tool to make sure the BCM is receiving signal from the PCM . This is complex for someone who doesn't deal with or know about serial data communications ! All it is ,is electric inputs to a control module, then the control module configures it into data bits an bytes 1's an 0's then sends it out on the Data bus. The module that needs this info reads it an turns on the lights.This system can set codes in the bcm ,leading to a problem.

DTC B1277:11 (Reverse Lamp: Circuit Short To Ground) - a DTC that sets when the BCMdetects a short to ground from the reversing lamp output circuit.

DTC B1277:15 (Reverse Lamp: Circuit Short To Battery or Open) - a DTC that sets when the BCMdetects an open from the reversing lamp output circuit.

Could set codes in the PCM - powertrain control module for a transmission range sensor problem !

the reverse clutch in the trans is after failing.there are two clutch packs in trans for reverse,low/reverse and reverse clutch in overdrive unit,so where you have all foward gears the low/ reverse is ok the reverse clutch in od unit is most likely culpret

On the side of your transmission will be a switch with several wires
coming out of it. This is your reverse switch that turns on your
reverse lights and most likely needs to be replaced. The switch is just plug and play